For the U.S., Kerry is to sign the agreement Friday and then President Obama will ratify it before he leaves office in December, a senior U.S. official told CBS News in a conference call this week.
Time Frame. The average dolphin species can stay underwater for as long as eight to 10 minutes; some can remain submerged while holding their breath for 15 minutes. Dolphins breathe through their blowhole, which has a muscular flap that covers it when they go under water, keeping water out of their lungs. Size.
They normally breathe about four to five times per... According to the Institute for Marine Mammal studies, dolphins can generally hold their breath for as long as 10 minutes. They normally breathe about four to five times per... According to the Institute for Marine Mammal studies, dolphins can generally hold their breath for as long as 10 minutes. They normally breathe about four to five times per minute. Unlike humans, dolphins are voluntary breathers.